Quote:
Originally Posted by 86TOYO2k17
I found an in depth article explaining the physics and doing the math on everything. It was specifically for mustangs but principals still stands.
A 30lb shaft dropping to 15lbs with same diameter on a 13sec car would avg an extra 1/4hp for the run.
However a flywheel going from 25 to 12.5 bcs of the larger diameter would net about 3.5hp over a 13second run.
I guess I need to find something else to throw money at.
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It is not only about how the mass is distributed like the diameter. It is also about where this mass is located. Gains from rotational weight are best if they located before the transmission. You can imagine that the car is much lighter because of the gearing, so even reducing a few kg makes sense. People arguing that this doesn't work, they don't understand the basic principle of gearing. The driveshaft on other hand is located after the transmission, so the gearing doesn't help at all.
And by the way, the gains of a flywheel weight reduction are more. You remove most of this weight from the outside part of the flywheel , so it has a much less inertia.